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| X波段双极化雷达在北京夏季降水估测中的应用 | |
| 引用本文： | 陈羿辰,刘锦丽,段树,苏德斌,吕达仁.X波段双极化雷达在北京夏季降水估测中的应用[J].气候与环境研究,2012,17(3):292-302. |
| 作者姓名： | 陈羿辰 刘锦丽 段树 苏德斌 吕达仁 |
| 作者单位： | 1. 成都信息工程学院电子工程学院,成都610225;中国科学院大气物理研究所中层大气与全球环境探测重点实验室,北京100029;北京市人工影响天气办公室,北京100089 2. 中国科学院大气物理研究所中层大气与全球环境探测重点实验室,北京,100029 3. 中国科学院大气物理研究所中层大气与全球环境探测重点实验室,北京100029;北京市气象局,北京100089 |
| 基金项目： | 中国科学院知识创新工程重要方向课题 KZCX2-YW-206,国家自然科学基金重点项目 40930949,国家自然科学基金专项基金项目40227001 |
| 摘 要： | 利用X波段双极化雷达和地面自动雨量站数据对北京地区2009年夏季降水进行分析,先采用低通滤波、衰减订正等方法对数据质量进行控制,提取了单位差分传播相移Kdp之后,分别拟合出X波段双极化雷达参数与降水之间的两个关系式:Zh=159R1.37及R=13.9Kdp0.81,最后再分别利用这些拟合公式对北京地区进行降雨估测。结果表明:雷达用这两个公式估测的降雨量与地面实测降雨量有较好的一致性;且当每小时降雨量大于10mm时,Kdp-R的估测比Zh-R估测更稳定、准确;通过平均标准差统计可知,Kdp-R估测精度明显高于Zh-R估测精度。 |
| 关 键 词： | 双极化雷达 单位差分传播相移 自动雨量站 降水估测 |
| 收稿时间： | 9/2/2010 12:00:00 AM |
| 修稿时间： | 2012/3/19 0:00:00 |
Application of X-Band Dual Polarization Radar in Precipitation Estimation in Summer of Beijing |
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| CHEN Yichen,LIU Jinli,DUAN Shu,SU Debin and LV Daren.Application of X-Band Dual Polarization Radar in Precipitation Estimation in Summer of Beijing[J].Climatic and Environmental Research,2012,17(3):292-302. | |
| Authors: | CHEN Yichen LIU Jinli DUAN Shu SU Debin and LV Daren |
| Institution: | Electronic Engineering College, Chengdu University of Information Technology, Chengdu 610225;Key Laboratory for Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Beijing Weather Modification Office, Beijing 100089;Key Laboratory for Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Key Laboratory for Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Key Laboratory for Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Beijing Meteorological Bureau, Beijing 100089;Key Laboratory for Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
| Abstract: | Dual polarization X-band radar data and ground-based automatic rain gauge data were analyzed for precipitation estimation in summer of Beijing in 2009. Firstly, the low pass filtering and attenuation correction methods were used for controlling the quality of radar data. Then two relationships of X-band radar parameters and rain rate were established, i.e.Zh=159R1.37 and R =13.9Kdp 0.81, after the specific differential propagation phase (Kdp) was extracted. Finally the comparison analysis was made between the rain rates estimated from the two relationships and the corresponding ground data. The results indicate that the rain rates estimated from the two relationships have a good consistency with the ground data. In addition, when the rain rates are greater than 10 mm·h-1, the estimated rain rates from Kdp-R are more accurate and stable than that from Zh-R. Also, the average standard deviation analysis shows that the estimation accuracy of Kdp-R is significantly higher than Zh-R. |
| Keywords: | dual polarization radar specific differential propagation phase automatic rain gauge precipitation estimation |
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